I'm not sure if this is an Atlassian Access issue or not, but the gist of our issue is that we have integrated the provisioning API to our app to which a user clicks a button, we provision their account and add them to appropriate security groups. They then navigate to our SSO login and then experience:
1. Delay in the ability to login thru our SSO (shortest delay)
2. Inability to see any associated Projects or Spaces the groups they are in have rights to
3. Ability to see 'some' of the Spaces/Projects their group has access to and then ability to see the rest several minutes later.
The delay is creating a bit of a support bottleneck as there is nothing wrong with their setup, their rights just do not seem to be propagating across the Atlassian cloud faster then when they get there.